package com.itheima.controller;



import com.fasterxml.jackson.databind.ObjectMapper;
import com.itheima.service.UserService;
import com.itheima.service.impl.UserServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.Method;

/*
* 抽取Servlet
* */
public class BaseServlet extends HttpServlet {
    public UserService userService;
    public ObjectMapper obj;
    public void init() throws ServletException {
        userService=new UserServiceImpl();
        obj=new ObjectMapper();
    }

    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //1、获取URI
        String uri = req.getRequestURI();
        String methodName = uri.substring(uri.lastIndexOf("/") + 1);
        //获取方法对象
        try {
            Method method=this.getClass().getDeclaredMethod(methodName,HttpServletRequest.class,HttpServletResponse.class);
            method.setAccessible(true);
            method.invoke(this,req,resp);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
